Home / 103,199.88-142,417.40-57,887.92

Finding the Fourth Proportional to 103,199.88, 142,417.40 and 57,887.92

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Solution

The fourth proportional to 103,199.88, 142,417.40 and 57,887.92 is: 79,886.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,199.88 : 142,417.40 = 57,887.92 : x
  2. Step 2: Convert to fraction form
    103,199.88/142,417.40 = 57,887.92/x
  3. Step 3: Cross multiply
    103,199.88x = 142,417.40 × 57,887.92
  4. Step 4: Simplify right side
    103,199.88x = 8,244,247,057.81
  5. Step 5: Solve for x
    x = 8,244,247,057.81/103,199.88
  6. Step 6: Final answer
    x = 79,886.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.